Chair.



nu; 702,768. Pamnted'luen, |902.

mw. BULEN'S.;

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(Application med nec. '12,'19Q1L) (no model.) 2 sham-#sheet No. 702,768. V Patented luna I7, |902. l H.,W. BDLENS.

CHAIR.

(Appiieaci'bn med me. 12, 1901.) 1 gno maar.) 2 sham-sheet z.

me Nqnms FUER: co.. PMQTD-LrTHO.. WASHINGTON', D. c.,

UNITED STATESt f PATENT OFFICE.

HARRY IV. BOLENS, OF PORT WASHINGTON, IVISOONSIN.

CHAIR.

SPECIFICATION forming part ofr Letters Patent No. 702,768, dated June 17, 1902.

Application filed December 12,1901. .Serial No. 85,559. (No model.)

To all whom, it may concern: p

Be it known that I, HARRY W. BoLnNs, a

citizen of the United States', and a resident of Port Washington, in the county of Ozaukee and State of Wisconsin, have invented cer tain new and useful Improvements in Chairs; and I do hereby declare that the following is a full, clear, and exact description thereof.

My improvements relate to chairs that are. organized to have vertically adjustable,'

spring-controlled, and pivotal seats, Said improvements consisting in certain peculiarities of construction and combination of parts in the metal-work of such a chair, as hereinafter particularly set forth with reference to the accompanying drawings and subsequently' claimed. l

Figure l of the drawings represents a sider portion of said spindle being in elevation and Fig. 6 a plan View of what is shown in the fth figure.

A designates a threaded adjusting standard 0r screw that is cast, and the same isformed with a central core or chamber A', that may extend throughout the screw-orpartially so. Either cast on the upper end of the screw, and therefore integral therewithior secured thereon, and therefore separate,is a boss or ring A2, from which extend outwardly and upwardly standards B, apertured to receive the usual pivoting-pintle O. At their rear edges these standards may have formed shoulders B and between thestandards at the rear side thereof are formed seats f, designed to receive the inner endsof the tension-springs F, and spaced apart to permit the passage of the tension-bolt H. The outer end of the ten sion-bolt carries a cross-piece G, having seats g, and betweenl the latter seats and the'seats f are compressed the usual springs.

The inner faces of the seats f are provided with stop-lugs n, and lugs .m are formed on the spreader above the seatsf and are adapt- '.ed to limitthe tilting movement of the i this form of spider I prefer to position the spider-arms ata right angle and for this rea-` son `in the present instance` form the spreader with intersecting seats C2 and O3. These seats are preferably curved or substantially U- `shaped in cross-section to conform to the shapein cross-section of the spider-arms E F/Which are riveted or otherwise rigidly secured in the seats C2 and C3, respectively'.

The spider-arms intersecting each other, as

shown, necessitates the arrangement of the seats therefor in different horizontal planes, 'whereby the upper spiderarm E will clear the other. In order that the spider-arms may have sufficient bearing to render them stable, the seats for supporting the same are extended a suflicient distance at each side for that purpose.

The spreader is provided at opposite sides with perforated depending ears D2, that somewhat loosely it between the standards B, and

through which and the standards is passed thepivoting-pintle C. The ears abut at their rear edges against the stop-lugs fn, before mentioned, when the spreader is tilted in one direction. At their. opposite edges the ears D2`arerecessed or notched, as at t', and resting'therein and bearing thereagainst are recessed knife-edgestz, formedfin the' inner edge and near the opposite ends of theftransf Versecross-piece I. This cross-piece is transversely bored to receive the tension-bolt, and

beyondrthe latter is threaded to receive the nut orwheel J.y

The spider-arms are preferably formed of sheet metal, and While semitubularhor' U shaped in cross-section, yet maybe of any shape desired, and where both'ends of each are tobe attached lto the chair they terminate in attaching ends c. In the present instance,

Where the arms are shown as intersecting, of l course the lower arm is given a greater lona gitudinal curve, so that ,ftheattaching' ends are on a common horizontal plane.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is`

IOO

l. In a seat-spider, a spreader provided with intersecting spider-arm seats, combined with spider-arms mounted in said seats.

2. In a seat-spider, a spreader provided with spider-arm seats disposed at an angle to each other, combined with spider-arms mounted in the seats.

3. In a seat-spider, a spreader provided with spider-arm seats located in different planes and intersecting each other, combined with spider-arms located in the seats, the said spider-arms terminating in the same plane in attaching ends.

4. In a seat-spider, a spreader provided with intersecting extended seats grooved to receive spider-arms, combined with intersecting spider-arms mounted in and secured to said seats.

5. In aseat-spide1,ahollow adjusting-screw provided with an integrally-cast boss at its upper end having upwardly-disposed standards and at one side thereof seats, combined with a spreader havingdepending ears, a pintle passed through the ears and standards, notches formed in the ears, a bored bridgepiece engaging the notches, a threaded adjusting-bolt passed therethrough, a hand-nut on the end of the bolt, a cross-piece having seats on the other end thereof, springs interposed between the seats of the boss and those of the cross-piece, and means for attaching the spreader to a chair.

G. In a seat-spider, an adjusting-screw, a boss at the upper end thereof provided with upwardly-disposed perforated standards, and between the same with spring-receiving seats, combined with a spreader having means of attachment to a chair and provided With depending perforated ears having notches, a pintle connecting the ears and perforated standards, an adjusting-bolt, a cross-piece carried thereby and having seats, springs interposed between the seats of the cross-piece and those of the boss, a bridge-piece seated in the notches of the ears and having an eye receiving the adjusting-bolt, and a hand nut or wheel mounted on the bolt beyond the bridge-piece.

In testimony that I claim the foregoing I have hereunto set my hand, at Milwaukee, in the county of Milwaukee and State of Wisconsin, in the presence 0E two witnesses.

HARRY XV. BOLENS.

Vitnesses:

N. E. OLIPHANT, B. C. RoLoFF. 

